Struct tinkerforge::silent_stepper_v2_bricklet::SilentStepperV2Bricklet

pub struct SilentStepperV2Bricklet { /* private fields */ }

Silently drives one bipolar stepper motor with up to 46V and 1.6A per phase

Implementations

impl SilentStepperV2Bricklet

pub const DEVICE_IDENTIFIER: u16 = 2_166u16

pub const DEVICE_DISPLAY_NAME: &'static str = "Silent Stepper Bricklet 2.0"

pub fn new<T: GetRequestSender>( uid: &str, req_sender: T ) -> SilentStepperV2Bricklet

Creates an object with the unique device ID uid. This object can then be used after the IP Connection ip_connection is connected.

pub fn get_response_expected( &mut self, fun: SilentStepperV2BrickletFunction ) -> Result<bool, GetResponseExpectedError>

Returns the response expected flag for the function specified by the function ID parameter. It is true if the function is expected to send a response, false otherwise.

For getter functions this is enabled by default and cannot be disabled, because those functions will always send a response. For callback configuration functions it is enabled by default too, but can be disabled by set_response_expected. For setter functions it is disabled by default and can be enabled.

Enabling the response expected flag for a setter function allows to detect timeouts and other error conditions calls of this setter as well. The device will then send a response for this purpose. If this flag is disabled for a setter function then no response is sent and errors are silently ignored, because they cannot be detected.

See set_response_expected for the list of function ID constants available for this function.

pub fn set_response_expected( &mut self, fun: SilentStepperV2BrickletFunction, response_expected: bool ) -> Result<(), SetResponseExpectedError>

Changes the response expected flag of the function specified by the function ID parameter. This flag can only be changed for setter (default value: false) and callback configuration functions (default value: true). For getter functions it is always enabled.

Enabling the response expected flag for a setter function allows to detect timeouts and other error conditions calls of this setter as well. The device will then send a response for this purpose. If this flag is disabled for a setter function then no response is sent and errors are silently ignored, because they cannot be detected.

pub fn set_response_expected_all(&mut self, response_expected: bool)

Changes the response expected flag for all setter and callback configuration functions of this device at once.

pub fn get_api_version(&self) -> [u8; 3]

Returns the version of the API definition (major, minor, revision) implemented by this API bindings. This is neither the release version of this API bindings nor does it tell you anything about the represented Brick or Bricklet.

pub fn get_under_voltage_callback_receiver( &self ) -> ConvertingCallbackReceiver<u16>

This receiver is triggered when the input voltage drops below the value set by set_minimum_voltage. The parameter is the current voltage.

pub fn get_position_reached_callback_receiver( &self ) -> ConvertingCallbackReceiver<i32>

This receiver is triggered when a position set by [set_steps] or [set_target_position] is reached.

Note

Since we can’t get any feedback from the stepper motor, this only works if the acceleration (see [set_speed_ramping]) is set smaller or equal to the maximum acceleration of the motor. Otherwise the motor will lag behind the control value and the receiver will be triggered too early.

pub fn get_all_data_callback_receiver( &self ) -> ConvertingCallbackReceiver<AllDataEvent>

This receiver is triggered periodically with the period that is set by [set_all_callback_configuration]. The parameters are: the current velocity, the current position, the remaining steps, the stack voltage, the external voltage and the current consumption of the stepper motor.

pub fn get_new_state_callback_receiver( &self ) -> ConvertingCallbackReceiver<NewStateEvent>

This receiver is triggered whenever the Silent Stepper Bricklet 2.0 enters a new state. It returns the new state as well as the previous state.

pub fn get_gpio_state_callback_receiver( &self ) -> ConvertingCallbackReceiver<[bool; 2]>

This receiver is triggered by GPIO changes if it is activated through [set_gpio_action].

pub fn set_max_velocity(&self, velocity: u16) -> ConvertingReceiver<()>

Sets the maximum velocity of the stepper motor. This function does not start the motor, it merely sets the maximum velocity the stepper motor is accelerated to. To get the motor running use either [set_target_position], [set_steps], [drive_forward] or [drive_backward].

pub fn get_max_velocity(&self) -> ConvertingReceiver<u16>

Returns the velocity as set by [set_max_velocity].

pub fn get_current_velocity(&self) -> ConvertingReceiver<u16>

Returns the current velocity of the stepper motor.

pub fn set_speed_ramping( &self, acceleration: u16, deacceleration: u16 ) -> ConvertingReceiver<()>

Sets the acceleration and deacceleration of the stepper motor. An acceleration of 1000 means, that every second the velocity is increased by 1000 steps/s.

For example: If the current velocity is 0 and you want to accelerate to a velocity of 8000 steps/s in 10 seconds, you should set an acceleration of 800 steps/s².

An acceleration/deacceleration of 0 means instantaneous acceleration/deacceleration (not recommended)

pub fn get_speed_ramping(&self) -> ConvertingReceiver<SpeedRamping>

Returns the acceleration and deacceleration as set by [set_speed_ramping].

pub fn full_brake(&self) -> ConvertingReceiver<()>

Executes an active full brake.

Warning

This function is for emergency purposes, where an immediate brake is necessary. Depending on the current velocity and the strength of the motor, a full brake can be quite violent.

Call [stop] if you just want to stop the motor.

pub fn set_current_position(&self, position: i32) -> ConvertingReceiver<()>

Sets the current steps of the internal step counter. This can be used to set the current position to 0 when some kind of starting position is reached (e.g. when a CNC machine reaches a corner).

pub fn get_current_position(&self) -> ConvertingReceiver<i32>

Returns the current position of the stepper motor in steps. On startup the position is 0. The steps are counted with all possible driving functions ([set_target_position], [set_steps], [drive_forward] or [drive_backward]). It also is possible to reset the steps to 0 or set them to any other desired value with [set_current_position].

pub fn set_target_position(&self, position: i32) -> ConvertingReceiver<()>

Sets the target position of the stepper motor in steps. For example, if the current position of the motor is 500 and [set_target_position] is called with 1000, the stepper motor will drive 500 steps forward. It will use the velocity, acceleration and deacceleration as set by [set_max_velocity] and [set_speed_ramping].

A call of [set_target_position] with the parameter x is equivalent to a call of [set_steps] with the parameter (x - [get_current_position]).

pub fn get_target_position(&self) -> ConvertingReceiver<i32>

Returns the last target position as set by [set_target_position].

pub fn set_steps(&self, steps: i32) -> ConvertingReceiver<()>

Sets the number of steps the stepper motor should run. Positive values will drive the motor forward and negative values backward. The velocity, acceleration and deacceleration as set by [set_max_velocity] and [set_speed_ramping] will be used.

pub fn get_steps(&self) -> ConvertingReceiver<i32>

Returns the last steps as set by [set_steps].

pub fn get_remaining_steps(&self) -> ConvertingReceiver<i32>

Returns the remaining steps of the last call of [set_steps]. For example, if [set_steps] is called with 2000 and [get_remaining_steps] is called after the motor has run for 500 steps, it will return 1500.

pub fn set_step_configuration( &self, step_resolution: u8, interpolation: bool ) -> ConvertingReceiver<()>

Sets the step resolution from full-step up to 1/256-step.

If interpolation is turned on, the Silent Stepper Bricklet 2.0 will always interpolate your step inputs as 1/256-step. If you use full-step mode with interpolation, each step will generate 256 1/256 steps.

For maximum torque use full-step without interpolation. For maximum resolution use 1/256-step. Turn interpolation on to make the Stepper driving less noisy.

If you often change the speed with high acceleration you should turn the interpolation off.

Associated constants:

• SILENT_STEPPER_V2_BRICKLET_STEP_RESOLUTION_1
• SILENT_STEPPER_V2_BRICKLET_STEP_RESOLUTION_2
• SILENT_STEPPER_V2_BRICKLET_STEP_RESOLUTION_4
• SILENT_STEPPER_V2_BRICKLET_STEP_RESOLUTION_8
• SILENT_STEPPER_V2_BRICKLET_STEP_RESOLUTION_16
• SILENT_STEPPER_V2_BRICKLET_STEP_RESOLUTION_32
• SILENT_STEPPER_V2_BRICKLET_STEP_RESOLUTION_64
• SILENT_STEPPER_V2_BRICKLET_STEP_RESOLUTION_128
• SILENT_STEPPER_V2_BRICKLET_STEP_RESOLUTION_256

pub fn get_step_configuration(&self) -> ConvertingReceiver<StepConfiguration>

Returns the step mode as set by [set_step_configuration].

Associated constants:

• SILENT_STEPPER_V2_BRICKLET_STEP_RESOLUTION_1
• SILENT_STEPPER_V2_BRICKLET_STEP_RESOLUTION_2
• SILENT_STEPPER_V2_BRICKLET_STEP_RESOLUTION_4
• SILENT_STEPPER_V2_BRICKLET_STEP_RESOLUTION_8
• SILENT_STEPPER_V2_BRICKLET_STEP_RESOLUTION_16
• SILENT_STEPPER_V2_BRICKLET_STEP_RESOLUTION_32
• SILENT_STEPPER_V2_BRICKLET_STEP_RESOLUTION_64
• SILENT_STEPPER_V2_BRICKLET_STEP_RESOLUTION_128
• SILENT_STEPPER_V2_BRICKLET_STEP_RESOLUTION_256

pub fn drive_forward(&self) -> ConvertingReceiver<()>

Drives the stepper motor forward until [drive_backward] or [stop] is called. The velocity, acceleration and deacceleration as set by [set_max_velocity] and [set_speed_ramping] will be used.

pub fn drive_backward(&self) -> ConvertingReceiver<()>

Drives the stepper motor backward until [drive_forward] or [stop] is triggered. The velocity, acceleration and deacceleration as set by [set_max_velocity] and [set_speed_ramping] will be used.

pub fn stop(&self) -> ConvertingReceiver<()>

Stops the stepper motor with the deacceleration as set by [set_speed_ramping].

pub fn get_input_voltage(&self) -> ConvertingReceiver<u16>

Returns the external input voltage. The external input voltage is given via the black power input connector on the Silent Stepper Bricklet 2.0.

If there is an external input voltage and a stack input voltage, the motor will be driven by the external input voltage. If there is only a stack voltage present, the motor will be driven by this voltage.

Warning

This means, if you have a high stack voltage and a low external voltage, the motor will be driven with the low external voltage. If you then remove the external connection, it will immediately be driven by the high stack voltage

pub fn set_motor_current(&self, current: u16) -> ConvertingReceiver<()>

Sets the current with which the motor will be driven.

Warning

Do not set this value above the specifications of your stepper motor. Otherwise it may damage your motor.

pub fn get_motor_current(&self) -> ConvertingReceiver<u16>

Returns the current as set by [set_motor_current].

pub fn set_enabled(&self, enabled: bool) -> ConvertingReceiver<()>

Enables/Disables the driver chip. The driver parameters can be configured (maximum velocity, acceleration, etc) before it is enabled.

Warning

Disabling the driver chip while the motor is still turning can damage the driver chip. The motor should be stopped calling [stop] function before disabling the motor power. The [stop] function will not wait until the motor is actually stopped. You have to explicitly wait for the appropriate time after calling the [stop] function before calling the [set_enabled] with false function.

pub fn get_enabled(&self) -> ConvertingReceiver<bool>

Returns true if the stepper driver is enabled, false otherwise.

pub fn set_basic_configuration( &self, standstill_current: u16, motor_run_current: u16, standstill_delay_time: u16, power_down_time: u16, stealth_threshold: u16, coolstep_threshold: u16, classic_threshold: u16, high_velocity_chopper_mode: bool ) -> ConvertingReceiver<()>

Sets the basic configuration parameters for the different modes (Stealth, Coolstep, Classic).

• Standstill Current: This value can be used to lower the current during stand still. This might be reasonable to reduce the heating of the motor and the Bricklet 2.0. When the motor is in standstill the configured motor phase current will be driven until the configured Power Down Time is elapsed. After that the phase current will be reduced to the standstill current. The elapsed time for this reduction can be configured with the Standstill Delay Time. The maximum allowed value is the configured maximum motor current (see [set_motor_current]).

• Motor Run Current: The value sets the motor current when the motor is running. Use a value of at least one half of the global maximum motor current for a good microstep performance. The maximum allowed value is the current motor current. The API maps the entered value to 1/32 … 32/32 of the maximum motor current. This value should be used to change the motor current during motor movement, whereas the global maximum motor current should not be changed while the motor is moving (see [set_motor_current]).

• Standstill Delay Time: Controls the duration for motor power down after a motion as soon as standstill is detected and the Power Down Time is expired. A high Standstill Delay Time results in a smooth transition that avoids motor jerk during power down.

• Power Down Time: Sets the delay time after a stand still.

• Stealth Threshold: Sets the upper threshold for Stealth mode. If the velocity of the motor goes above this value, Stealth mode is turned off. Otherwise it is turned on. In Stealth mode the torque declines with high speed.

• Coolstep Threshold: Sets the lower threshold for Coolstep mode. The Coolstep Threshold needs to be above the Stealth Threshold.

• Classic Threshold: Sets the lower threshold for classic mode. In classic mode the stepper becomes more noisy, but the torque is maximized.

• High Velocity Chopper Mode: If High Velocity Chopper Mode is enabled, the stepper control is optimized to run the stepper motors at high velocities.

If you want to use all three thresholds make sure that Stealth Threshold < Coolstep Threshold < Classic Threshold.

pub fn get_basic_configuration(&self) -> ConvertingReceiver<BasicConfiguration>

Returns the configuration as set by [set_basic_configuration].

pub fn set_spreadcycle_configuration( &self, slow_decay_duration: u8, enable_random_slow_decay: bool, fast_decay_duration: u8, hysteresis_start_value: u8, hysteresis_end_value: i8, sine_wave_offset: i8, chopper_mode: u8, comparator_blank_time: u8, fast_decay_without_comparator: bool ) -> ConvertingReceiver<()>

Note: If you don’t know what any of this means you can very likely keep all of the values as default!

Sets the Spreadcycle configuration parameters. Spreadcycle is a chopper algorithm which actively controls the motor current flow. More information can be found in the TMC2130 datasheet on page 47 (7 spreadCycle and Classic Chopper).

• Slow Decay Duration: Controls duration of off time setting of slow decay phase. 0 = driver disabled, all bridges off. Use 1 only with Comparator Blank time >= 2.

• Enable Random Slow Decay: Set to false to fix chopper off time as set by Slow Decay Duration. If you set it to true, Decay Duration is randomly modulated.

• Fast Decay Duration: Sets the fast decay duration. This parameters is only used if the Chopper Mode is set to Fast Decay.

• Hysteresis Start Value: Sets the hysteresis start value. This parameter is only used if the Chopper Mode is set to Spread Cycle.

• Hysteresis End Value: Sets the hysteresis end value. This parameter is only used if the Chopper Mode is set to Spread Cycle.

• Sine Wave Offset: Sets the sine wave offset. This parameters is only used if the Chopper Mode is set to Fast Decay. 1/512 of the value becomes added to the absolute value of the sine wave.

• Chopper Mode: 0 = Spread Cycle, 1 = Fast Decay.

• Comparator Blank Time: Sets the blank time of the comparator. Available values are

  • 0 = 16 clocks,
  • 1 = 24 clocks,
  • 2 = 36 clocks and
  • 3 = 54 clocks.

  A value of 1 or 2 is recommended for most applications.

• Fast Decay Without Comparator: If set to true the current comparator usage for termination of the fast decay cycle is disabled.

Associated constants:

• SILENT_STEPPER_V2_BRICKLET_CHOPPER_MODE_SPREAD_CYCLE
• SILENT_STEPPER_V2_BRICKLET_CHOPPER_MODE_FAST_DECAY

pub fn get_spreadcycle_configuration( &self ) -> ConvertingReceiver<SpreadcycleConfiguration>

Returns the configuration as set by [set_basic_configuration].

Associated constants:

• SILENT_STEPPER_V2_BRICKLET_CHOPPER_MODE_SPREAD_CYCLE
• SILENT_STEPPER_V2_BRICKLET_CHOPPER_MODE_FAST_DECAY

pub fn set_stealth_configuration( &self, enable_stealth: bool, amplitude: u8, gradient: u8, enable_autoscale: bool, force_symmetric: bool, freewheel_mode: u8 ) -> ConvertingReceiver<()>

Note: If you don’t know what any of this means you can very likely keep all of the values as default!

Sets the configuration relevant for Stealth mode.

• Enable Stealth: If set to true the stealth mode is enabled, if set to false the stealth mode is disabled, even if the speed is below the threshold set in [set_basic_configuration].

• Amplitude: If autoscale is disabled, the PWM amplitude is scaled by this value. If autoscale is enabled, this value defines the maximum PWM amplitude change per half wave.

• Gradient: If autoscale is disabled, the PWM gradient is scaled by this value. If autoscale is enabled, this value defines the maximum PWM gradient. With autoscale a value above 64 is recommended, otherwise the regulation might not be able to measure the current.

• Enable Autoscale: If set to true, automatic current control is used. Otherwise the user defined amplitude and gradient are used.

• Force Symmetric: If true, A symmetric PWM cycle is enforced. Otherwise the PWM value may change within each PWM cycle.

• Freewheel Mode: The freewheel mode defines the behavior in stand still if the Standstill Current (see [set_basic_configuration]) is set to 0.

Associated constants:

• SILENT_STEPPER_V2_BRICKLET_FREEWHEEL_MODE_NORMAL
• SILENT_STEPPER_V2_BRICKLET_FREEWHEEL_MODE_FREEWHEELING
• SILENT_STEPPER_V2_BRICKLET_FREEWHEEL_MODE_COIL_SHORT_LS
• SILENT_STEPPER_V2_BRICKLET_FREEWHEEL_MODE_COIL_SHORT_HS

pub fn get_stealth_configuration( &self ) -> ConvertingReceiver<StealthConfiguration>

Returns the configuration as set by [set_stealth_configuration].

Associated constants:

• SILENT_STEPPER_V2_BRICKLET_FREEWHEEL_MODE_NORMAL
• SILENT_STEPPER_V2_BRICKLET_FREEWHEEL_MODE_FREEWHEELING
• SILENT_STEPPER_V2_BRICKLET_FREEWHEEL_MODE_COIL_SHORT_LS
• SILENT_STEPPER_V2_BRICKLET_FREEWHEEL_MODE_COIL_SHORT_HS

pub fn set_coolstep_configuration( &self, minimum_stallguard_value: u8, maximum_stallguard_value: u8, current_up_step_width: u8, current_down_step_width: u8, minimum_current: u8, stallguard_threshold_value: i8, stallguard_mode: u8 ) -> ConvertingReceiver<()>

Note: If you don’t know what any of this means you can very likely keep all of the values as default!

Sets the configuration relevant for Coolstep.

• Minimum Stallguard Value: If the Stallguard result falls below this value*32, the motor current is increased to reduce motor load angle. A value of 0 turns Coolstep off.

• Maximum Stallguard Value: If the Stallguard result goes above (Min Stallguard Value + Max Stallguard Value + 1) * 32, the motor current is decreased to save energy.

• Current Up Step Width: Sets the up step increment per Stallguard value. The value range is 0-3, corresponding to the increments 1, 2, 4 and 8.

• Current Down Step Width: Sets the down step decrement per Stallguard value. The value range is 0-3, corresponding to the decrements 1, 2, 8 and 16.

• Minimum Current: Sets the minimum current for Coolstep current control. You can choose between half and quarter of the run current.

• Stallguard Threshold Value: Sets the level for stall output (see [get_driver_status]). A lower value gives a higher sensitivity. You have to find a suitable value for your motor by trial and error, 0 works for most motors.

• Stallguard Mode: Set to 0 for standard resolution or 1 for filtered mode. In filtered mode the Stallguard signal will be updated every four full-steps.

Associated constants:

• SILENT_STEPPER_V2_BRICKLET_CURRENT_UP_STEP_INCREMENT_1
• SILENT_STEPPER_V2_BRICKLET_CURRENT_UP_STEP_INCREMENT_2
• SILENT_STEPPER_V2_BRICKLET_CURRENT_UP_STEP_INCREMENT_4
• SILENT_STEPPER_V2_BRICKLET_CURRENT_UP_STEP_INCREMENT_8
• SILENT_STEPPER_V2_BRICKLET_CURRENT_DOWN_STEP_DECREMENT_1
• SILENT_STEPPER_V2_BRICKLET_CURRENT_DOWN_STEP_DECREMENT_2
• SILENT_STEPPER_V2_BRICKLET_CURRENT_DOWN_STEP_DECREMENT_8
• SILENT_STEPPER_V2_BRICKLET_CURRENT_DOWN_STEP_DECREMENT_32
• SILENT_STEPPER_V2_BRICKLET_MINIMUM_CURRENT_HALF
• SILENT_STEPPER_V2_BRICKLET_MINIMUM_CURRENT_QUARTER
• SILENT_STEPPER_V2_BRICKLET_STALLGUARD_MODE_STANDARD
• SILENT_STEPPER_V2_BRICKLET_STALLGUARD_MODE_FILTERED

pub fn get_coolstep_configuration( &self ) -> ConvertingReceiver<CoolstepConfiguration>

Returns the configuration as set by [set_coolstep_configuration].

Associated constants:

• SILENT_STEPPER_V2_BRICKLET_CURRENT_UP_STEP_INCREMENT_1
• SILENT_STEPPER_V2_BRICKLET_CURRENT_UP_STEP_INCREMENT_2
• SILENT_STEPPER_V2_BRICKLET_CURRENT_UP_STEP_INCREMENT_4
• SILENT_STEPPER_V2_BRICKLET_CURRENT_UP_STEP_INCREMENT_8
• SILENT_STEPPER_V2_BRICKLET_CURRENT_DOWN_STEP_DECREMENT_1
• SILENT_STEPPER_V2_BRICKLET_CURRENT_DOWN_STEP_DECREMENT_2
• SILENT_STEPPER_V2_BRICKLET_CURRENT_DOWN_STEP_DECREMENT_8
• SILENT_STEPPER_V2_BRICKLET_CURRENT_DOWN_STEP_DECREMENT_32
• SILENT_STEPPER_V2_BRICKLET_MINIMUM_CURRENT_HALF
• SILENT_STEPPER_V2_BRICKLET_MINIMUM_CURRENT_QUARTER
• SILENT_STEPPER_V2_BRICKLET_STALLGUARD_MODE_STANDARD
• SILENT_STEPPER_V2_BRICKLET_STALLGUARD_MODE_FILTERED

pub fn set_misc_configuration( &self, disable_short_to_ground_protection: bool, synchronize_phase_frequency: u8 ) -> ConvertingReceiver<()>

Note: If you don’t know what any of this means you can very likely keep all of the values as default!

Sets miscellaneous configuration parameters.

• Disable Short To Ground Protection: Set to false to enable short to ground protection, otherwise it is disabled.

• Synchronize Phase Frequency: With this parameter you can synchronize the chopper for both phases of a two phase motor to avoid the occurrence of a beat. The value range is 0-15. If set to 0, the synchronization is turned off. Otherwise the synchronization is done through the formula f_sync = f_clk/(value*64). In Classic Mode the synchronization is automatically switched off. f_clk is 12.8MHz.

pub fn get_misc_configuration(&self) -> ConvertingReceiver<MiscConfiguration>

Returns the configuration as set by [set_misc_configuration].

pub fn set_error_led_config(&self, config: u8) -> ConvertingReceiver<()>

Configures the error LED to be either turned off, turned on, blink in heartbeat mode or show an error.

If the LED is configured to show errors it has three different states:

• Off: No error present.
• 250ms interval blink: Overtemperature warning.
• 1s interval blink: Input voltage too small.
• full red: motor disabled because of short to ground in phase a or b or because of overtemperature.

Associated constants:

• SILENT_STEPPER_V2_BRICKLET_ERROR_LED_CONFIG_OFF
• SILENT_STEPPER_V2_BRICKLET_ERROR_LED_CONFIG_ON
• SILENT_STEPPER_V2_BRICKLET_ERROR_LED_CONFIG_SHOW_HEARTBEAT
• SILENT_STEPPER_V2_BRICKLET_ERROR_LED_CONFIG_SHOW_ERROR

pub fn get_error_led_config(&self) -> ConvertingReceiver<u8>

Returns the LED configuration as set by [set_error_led_config]

Associated constants:

• SILENT_STEPPER_V2_BRICKLET_ERROR_LED_CONFIG_OFF
• SILENT_STEPPER_V2_BRICKLET_ERROR_LED_CONFIG_ON
• SILENT_STEPPER_V2_BRICKLET_ERROR_LED_CONFIG_SHOW_HEARTBEAT
• SILENT_STEPPER_V2_BRICKLET_ERROR_LED_CONFIG_SHOW_ERROR

pub fn get_driver_status(&self) -> ConvertingReceiver<DriverStatus>

Returns the current driver status.

• Open Load: Indicates if an open load is present on phase A, B or both. This could mean that there is a problem with the wiring of the motor. False detection can occur in fast motion as well as during stand still.

• Short To Ground: Indicates if a short to ground is present on phase A, B or both. If this is detected the driver automatically becomes disabled and stays disabled until it is enabled again manually.

• Over Temperature: The over temperature indicator switches to Warning if the driver IC warms up. The warning flag is expected during long duration stepper uses. If the temperature limit is reached the indicator switches to Limit. In this case the driver becomes disabled until it cools down again.

• Motor Stalled: Is true if a motor stall was detected.

• Actual Motor Current: Indicates the actual current control scaling as used in Coolstep mode. It represents a multiplier of 1/32 to 32/32 of the Motor Run Current as set by [set_basic_configuration]. Example: If a Motor Run Current of 1000mA was set and the returned value is 15, the Actual Motor Current is 16/32*1000mA = 500mA.

• Stallguard Result: Indicates the load of the motor. A lower value signals a higher load. Per trial and error you can find out which value corresponds to a suitable torque for the velocity used in your application. After that you can use this threshold value to find out if a motor stall becomes probable and react on it (e.g. decrease velocity). During stand still this value can not be used for stall detection, it shows the chopper on-time for motor coil A.

• Stealth Voltage Amplitude: Shows the actual PWM scaling. In Stealth mode it can be used to detect motor load and stall if autoscale is enabled (see [set_stealth_configuration]).

Associated constants:

• SILENT_STEPPER_V2_BRICKLET_OPEN_LOAD_NONE
• SILENT_STEPPER_V2_BRICKLET_OPEN_LOAD_PHASE_A
• SILENT_STEPPER_V2_BRICKLET_OPEN_LOAD_PHASE_B
• SILENT_STEPPER_V2_BRICKLET_OPEN_LOAD_PHASE_AB
• SILENT_STEPPER_V2_BRICKLET_SHORT_TO_GROUND_NONE
• SILENT_STEPPER_V2_BRICKLET_SHORT_TO_GROUND_PHASE_A
• SILENT_STEPPER_V2_BRICKLET_SHORT_TO_GROUND_PHASE_B
• SILENT_STEPPER_V2_BRICKLET_SHORT_TO_GROUND_PHASE_AB
• SILENT_STEPPER_V2_BRICKLET_OVER_TEMPERATURE_NONE
• SILENT_STEPPER_V2_BRICKLET_OVER_TEMPERATURE_WARNING
• SILENT_STEPPER_V2_BRICKLET_OVER_TEMPERATURE_LIMIT

pub fn set_minimum_voltage(&self, voltage: u16) -> ConvertingReceiver<()>

Sets the minimum voltage, below which the [get_under_voltage_callback_receiver] receiver is triggered. The minimum possible value that works with the Silent Stepper Bricklet 2.0 is 8V. You can use this function to detect the discharge of a battery that is used to drive the stepper motor. If you have a fixed power supply, you likely do not need this functionality.

pub fn get_minimum_voltage(&self) -> ConvertingReceiver<u16>

Returns the minimum voltage as set by [set_minimum_voltage].

pub fn set_time_base(&self, time_base: u32) -> ConvertingReceiver<()>

Sets the time base of the velocity and the acceleration of the Silent Stepper Bricklet 2.0.

For example, if you want to make one step every 1.5 seconds, you can set the time base to 15 and the velocity to 10. Now the velocity is 10steps/15s = 1steps/1.5s.

pub fn get_time_base(&self) -> ConvertingReceiver<u32>

Returns the time base as set by [set_time_base].

pub fn get_all_data(&self) -> ConvertingReceiver<AllData>

Returns the following parameters: The current velocity, the current position, the remaining steps, the stack voltage, the external voltage and the current consumption of the stepper motor.

The current consumption is calculated by multiplying the Actual Motor Current value (see [set_basic_configuration]) with the Motor Run Current (see [get_driver_status]). This is an internal calculation of the driver, not an independent external measurement.

The current consumption calculation was broken up to firmware 2.0.1, it is fixed since firmware 2.0.2.

There is also a receiver for this function, see [get_all_data_callback_receiver] receiver.

pub fn set_all_callback_configuration( &self, period: u32 ) -> ConvertingReceiver<()>

Sets the period with which the [get_all_data_callback_receiver] receiver is triggered periodically. A value of 0 turns the receiver off.

pub fn get_all_data_callback_configuraton(&self) -> ConvertingReceiver<u32>

Returns the period as set by [set_all_callback_configuration].

pub fn set_gpio_configuration( &self, channel: u8, debounce: u16, stop_deceleration: u16 ) -> ConvertingReceiver<()>

Sets the GPIO configuration for the given channel. You can configure a debounce and the deceleration that is used if the action is configured as normal stop. See [set_gpio_action].

pub fn get_gpio_configuration( &self, channel: u8 ) -> ConvertingReceiver<GpioConfiguration>

Returns the GPIO configuration for a channel as set by [set_gpio_configuration].

pub fn set_gpio_action( &self, channel: u8, action: u32 ) -> ConvertingReceiver<()>

Sets the GPIO action for the given channel.

The action can be a normal stop, a full brake or a receiver. Each for a rising edge or falling edge. The actions are a bitmask they can be used at the same time. You can for example trigger a full brake and a receiver at the same time or for rising and falling edge.

The deceleration speed for the normal stop can be configured with [set_gpio_configuration].

Associated constants:

• SILENT_STEPPER_V2_BRICKLET_GPIO_ACTION_NONE
• SILENT_STEPPER_V2_BRICKLET_GPIO_ACTION_NORMAL_STOP_RISING_EDGE
• SILENT_STEPPER_V2_BRICKLET_GPIO_ACTION_NORMAL_STOP_FALLING_EDGE
• SILENT_STEPPER_V2_BRICKLET_GPIO_ACTION_FULL_BRAKE_RISING_EDGE
• SILENT_STEPPER_V2_BRICKLET_GPIO_ACTION_FULL_BRAKE_FALLING_EDGE
• SILENT_STEPPER_V2_BRICKLET_GPIO_ACTION_CALLBACK_RISING_EDGE
• SILENT_STEPPER_V2_BRICKLET_GPIO_ACTION_CALLBACK_FALLING_EDGE

pub fn get_gpio_action(&self, channel: u8) -> ConvertingReceiver<u32>

Returns the GPIO action for a channel as set by [set_gpio_action].

Associated constants:

• SILENT_STEPPER_V2_BRICKLET_GPIO_ACTION_NONE
• SILENT_STEPPER_V2_BRICKLET_GPIO_ACTION_NORMAL_STOP_RISING_EDGE
• SILENT_STEPPER_V2_BRICKLET_GPIO_ACTION_NORMAL_STOP_FALLING_EDGE
• SILENT_STEPPER_V2_BRICKLET_GPIO_ACTION_FULL_BRAKE_RISING_EDGE
• SILENT_STEPPER_V2_BRICKLET_GPIO_ACTION_FULL_BRAKE_FALLING_EDGE
• SILENT_STEPPER_V2_BRICKLET_GPIO_ACTION_CALLBACK_RISING_EDGE
• SILENT_STEPPER_V2_BRICKLET_GPIO_ACTION_CALLBACK_FALLING_EDGE

pub fn get_gpio_state(&self) -> ConvertingReceiver<[bool; 2]>

Returns the GPIO state for both channels. True if the state is high and false if the state is low.

pub fn get_spitfp_error_count(&self) -> ConvertingReceiver<SpitfpErrorCount>

Returns the error count for the communication between Brick and Bricklet.

The errors are divided into

• ACK checksum errors,
• message checksum errors,
• framing errors and
• overflow errors.

The errors counts are for errors that occur on the Bricklet side. All Bricks have a similar function that returns the errors on the Brick side.

pub fn set_bootloader_mode(&self, mode: u8) -> ConvertingReceiver<u8>

Sets the bootloader mode and returns the status after the requested mode change was instigated.

You can change from bootloader mode to firmware mode and vice versa. A change from bootloader mode to firmware mode will only take place if the entry function, device identifier and CRC are present and correct.

This function is used by Brick Viewer during flashing. It should not be necessary to call it in a normal user program.

Associated constants:

• SILENT_STEPPER_V2_BRICKLET_BOOTLOADER_MODE_BOOTLOADER
• SILENT_STEPPER_V2_BRICKLET_BOOTLOADER_MODE_FIRMWARE
• SILENT_STEPPER_V2_BRICKLET_BOOTLOADER_MODE_BOOTLOADER_WAIT_FOR_REBOOT
• SILENT_STEPPER_V2_BRICKLET_BOOTLOADER_MODE_FIRMWARE_WAIT_FOR_REBOOT
• SILENT_STEPPER_V2_BRICKLET_BOOTLOADER_MODE_FIRMWARE_WAIT_FOR_ERASE_AND_REBOOT
• SILENT_STEPPER_V2_BRICKLET_BOOTLOADER_STATUS_OK
• SILENT_STEPPER_V2_BRICKLET_BOOTLOADER_STATUS_INVALID_MODE
• SILENT_STEPPER_V2_BRICKLET_BOOTLOADER_STATUS_NO_CHANGE
• SILENT_STEPPER_V2_BRICKLET_BOOTLOADER_STATUS_ENTRY_FUNCTION_NOT_PRESENT
• SILENT_STEPPER_V2_BRICKLET_BOOTLOADER_STATUS_DEVICE_IDENTIFIER_INCORRECT
• SILENT_STEPPER_V2_BRICKLET_BOOTLOADER_STATUS_CRC_MISMATCH

pub fn get_bootloader_mode(&self) -> ConvertingReceiver<u8>

Returns the current bootloader mode, see [set_bootloader_mode].

Associated constants:

• SILENT_STEPPER_V2_BRICKLET_BOOTLOADER_MODE_BOOTLOADER
• SILENT_STEPPER_V2_BRICKLET_BOOTLOADER_MODE_FIRMWARE
• SILENT_STEPPER_V2_BRICKLET_BOOTLOADER_MODE_BOOTLOADER_WAIT_FOR_REBOOT
• SILENT_STEPPER_V2_BRICKLET_BOOTLOADER_MODE_FIRMWARE_WAIT_FOR_REBOOT
• SILENT_STEPPER_V2_BRICKLET_BOOTLOADER_MODE_FIRMWARE_WAIT_FOR_ERASE_AND_REBOOT

pub fn set_write_firmware_pointer(&self, pointer: u32) -> ConvertingReceiver<()>

Sets the firmware pointer for [write_firmware]. The pointer has to be increased by chunks of size 64. The data is written to flash every 4 chunks (which equals to one page of size 256).

This function is used by Brick Viewer during flashing. It should not be necessary to call it in a normal user program.

pub fn write_firmware(&self, data: [u8; 64]) -> ConvertingReceiver<u8>

Writes 64 Bytes of firmware at the position as written by [set_write_firmware_pointer] before. The firmware is written to flash every 4 chunks.

You can only write firmware in bootloader mode.

This function is used by Brick Viewer during flashing. It should not be necessary to call it in a normal user program.

pub fn set_status_led_config(&self, config: u8) -> ConvertingReceiver<()>

Sets the status LED configuration. By default the LED shows communication traffic between Brick and Bricklet, it flickers once for every 10 received data packets.

You can also turn the LED permanently on/off or show a heartbeat.

If the Bricklet is in bootloader mode, the LED is will show heartbeat by default.

Associated constants:

• SILENT_STEPPER_V2_BRICKLET_STATUS_LED_CONFIG_OFF
• SILENT_STEPPER_V2_BRICKLET_STATUS_LED_CONFIG_ON
• SILENT_STEPPER_V2_BRICKLET_STATUS_LED_CONFIG_SHOW_HEARTBEAT
• SILENT_STEPPER_V2_BRICKLET_STATUS_LED_CONFIG_SHOW_STATUS

pub fn get_status_led_config(&self) -> ConvertingReceiver<u8>

Returns the configuration as set by [set_status_led_config]

Associated constants:

• SILENT_STEPPER_V2_BRICKLET_STATUS_LED_CONFIG_OFF
• SILENT_STEPPER_V2_BRICKLET_STATUS_LED_CONFIG_ON
• SILENT_STEPPER_V2_BRICKLET_STATUS_LED_CONFIG_SHOW_HEARTBEAT
• SILENT_STEPPER_V2_BRICKLET_STATUS_LED_CONFIG_SHOW_STATUS

pub fn get_chip_temperature(&self) -> ConvertingReceiver<i16>

Returns the temperature as measured inside the microcontroller. The value returned is not the ambient temperature!

The temperature is only proportional to the real temperature and it has bad accuracy. Practically it is only useful as an indicator for temperature changes.

pub fn reset(&self) -> ConvertingReceiver<()>

Calling this function will reset the Bricklet. All configurations will be lost.

After a reset you have to create new device objects, calling functions on the existing ones will result in undefined behavior!

pub fn write_uid(&self, uid: u32) -> ConvertingReceiver<()>

Writes a new UID into flash. If you want to set a new UID you have to decode the Base58 encoded UID string into an integer first.

We recommend that you use Brick Viewer to change the UID.

pub fn read_uid(&self) -> ConvertingReceiver<u32>

Returns the current UID as an integer. Encode as Base58 to get the usual string version.

pub fn get_identity(&self) -> ConvertingReceiver<Identity>

Returns the UID, the UID where the Bricklet is connected to, the position, the hardware and firmware version as well as the device identifier.

The position can be ‘a’, ‘b’, ‘c’, ‘d’, ‘e’, ‘f’, ‘g’ or ‘h’ (Bricklet Port). A Bricklet connected to an Isolator Bricklet is always at position ‘z’.

The device identifier numbers can be found here. |device_identifier_constant|

Trait Implementations

impl Clone for SilentStepperV2Bricklet

fn clone(&self) -> SilentStepperV2Bricklet

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.